Strap adjuster



FIG. 1 is a top perspective view of a strap adjuster showing the new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view;

FIG. 5 is a left side view;

FIG. 6 is a front view thereof; and,

FIG. 7 is a back view thereof.

The broken line portions of the disclosure are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a strap adjuster, as shown and described. 